Canada's biggest banks look set to post slower growth in the second quarter of the year after starting the year with strong earnings momentum.

National Bank (TSE:NA) reported after markets closed Thursday a higher first quarter profit on growth in its personal and commercial banking unit, as well as its financial markets business, topping Street views.

National Bank of Canada (TSE:NA) saw its fourth quarter earnings beat Street estimates on Thursday after its results got a boost from its July acquisition of Wellington West Holdings.

Indeed, the deal will grow National Bank's wealth management platform and build its presence outside of Quebec, as more than 48% of retail revenue will now be generated outside of the province. Following the close of the deal, expected this July, National Bank will have roughly $67 billion in assets under administration

BMO Financial Group (TSE:BMO) Wednesday dropped the puck on Canadian banking earnings season as it posted a 27 percent jump in second-quarter earnings, beating analyst expectations.

Canada's biggest banks look set to post slower growth in the second quarter of the year after starting the year with strong earnings momentum.

JPMorgan Chase (NYSE:JPM) said late Thursday that a $2 billion trading loss will impact its second-quarter earnings.

Holding company Berkshire Hathaway (NYSE:BRK.A) said first-quarter profit more than doubled as its insurance units avoided major disaster losses and the paper value of its derivative contracts improved.

Manulife Financial Corp. (TSE:MFC) Thursday posted a 22 percent jump in earnings on a number of special items as well as strong operational performance in Canada and Asia.